Bump puma from 5.6.7 to 5.6.9

Bumps [puma](https://github.com/puma/puma) from 5.6.7 to 5.6.9.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.6.7...v5.6.9)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -939,7 +939,7 @@ GEM
       timeout
     net-smtp (0.4.0)
       net-protocol
-    nio4r (2.7.0)
+    nio4r (2.7.3)
     noid (0.9.0)
     noid-rails (3.1.0)
       actionpack (>= 5.0.0, < 7.1)
@@ -1027,7 +1027,7 @@ GEM
       pry (>= 0.13, < 0.15)
     psych (3.3.4)
     public_suffix (4.0.7)
-    puma (5.6.7)
+    puma (5.6.9)
       nio4r (~> 2.0)
     qa (5.11.0)
       activerecord-import